ios - 当我们已经有一个单元格时尝试设置滑动以删除单元格....这看起来不太好

Question

单元格不允许删除它。当滑动发生时，它会向后滑动，因此无法删除它。控制台中的消息说:

attempting to set a swipe to delete cell when we already have one....
that doesn't seem good

代码:

#import "GroupDetailInfoViewController.h"
#import "YFJLeftSwipeDeleteTableView.h"

@interface GroupDetailInfoViewController ()

{
    NSMutableArray * _dataArray;
    UIButton * _deleteButton;
    NSIndexPath * _editingIndexPath;

    UISwipeGestureRecognizer * _leftGestureRecognizer;
    UISwipeGestureRecognizer * _rightGestureRecognizer;
    UITapGestureRecognizer * _tapGestureRecognizer;
}

@property (nonatomic, retain) YFJLeftSwipeDeleteTableView *tableView;
@end


@implementation GroupDetailInfoViewController

- (id)init
{
    self = [super init];
    if (self) {
        // Custom initialization
        _dataArray = [@[@(1), @(2), @(3), @(4), @(5), @(6), @(7), @(8), @(9), @(10)] mutableCopy];
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    CGRect frame = self.view.bounds;
    self.tableView = [[YFJLeftSwipeDeleteTableView alloc] initWithFrame:frame];
    self.tableView.delegate = self;
    self.tableView.dataSource = self;
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"Cell"];
    [self.view addSubview:self.tableView];


}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    // Return the number of sections.
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // Return the number of rows in the section.
    return _dataArray.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    cell.textLabel.text = [NSString stringWithFormat:@"Data at Row %@", _dataArray[indexPath.row]];

    return cell;
}

// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Return NO if you do not want the specified item to be editable.
    return YES;
}

// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source
        [_dataArray removeObjectAtIndex:indexPath.row];
        [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
    }

}

- (void)tableView:(UITableView*)tableView willBeginEditingRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"willBeginEditingRowAtIndexPath");
    //[super setEditing:YES animated:YES];
    [self.tableView setEditing:YES animated:YES];

    //Self.editing handles the done / edit button
    tableView.editing = YES;
}

- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCellEditingStyle editingStyle = UITableViewCellEditingStyleNone;
    /*if (tableView.editing)*/ editingStyle = UITableViewCellEditingStyleDelete;

    return editingStyle;
}

- (void)tableView:(UITableView*)tableView didEndEditingRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"didEndEditingRowAtIndexPath");
    //[super setEditing:NO animated:YES];
    [self.tableView setEditing:NO animated:YES];

    //Self.editing handles the done / edit button
    tableView.editing = NO;


}

- (BOOL)tableView:(UITableView *)tableView shouldIndentWhileEditingRowAtIndexPath:(NSIndexPath *)indexPath {
    return NO;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    [self.tableView deselectRowAtIndexPath:indexPath animated:YES];
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    return 44;
}

@end

Answer 1

我在添加 SWTableViewCell 后遇到了同样的问题。我在已经实现 - (void)tableView:(UITableView)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath*)indexPath* 之后添加了 SWTableViewCell。

一旦我删除了这个方法，事情就按预期进行了。我猜想 SWTableViewCell 安装的 View 与试图基于此方法安装相同类型 View 的系统冲突。